zpp and z22 double suction axially split single stage
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ZPP and Z22 Double Suction Axially Split Single Stage Centrifugal Pumps
Main Applications
ZPP and Z22 double suction axially split single stage centrifugal pumps are used for demanding high-capacity industrial applications to ensure process reliability, high efficiency, and low operating costs.
The range comprises over 20 sizes for each series with different impeller designs. This flexibility ensures that energy consumption is minimized throughout the complete operating range of a pump.
ZPP and Z22 pump series are designed for demanding industrial applications to pump:• Clean and slightly contaminated liquids• Viscous liquids• Low-consistency fibrous slurries• Liquids in applications with small pressure pulsations
Z22ZPP
1
23
4
67
7
6
5
4
Features and Benefits
• Double entry impeller• Double suction impeller, with split, staggered and
skewed vanes give high efficiency and low Net Positive Suction Head (NPSH) values
• Low pulsation impellers are available, designed to meet the stringent performance requirements of paper machine head box applications
• Impeller installed on the shaft by strong interference fit without keyway in ZPP, which is easy to assemble, disassembled hydraulically
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5
32
1
• Axially split casing• Heavy-duty horizontally split casing • Inspection, maintenance and removal of the rotating unit
is possible without disturbing the piping or motor• Single volute for lower head and double volute for higher
head applications• Low radial loads on bearings and low shaft deflection
providing extended seal and bearing life
• Casing wear rings• Renewable casing wear rings protect the casing from
wear and assure smooth flow to the impeller improving efficiency
• Maintaining correct clearance is easy• Wear ring locked in lower casing to prevent rotation
• Heavy duty shaft• For high corrosion and wear resistance plus high
strength• Reduced shaft deflection for extended seal and bearing
life• Duplex stainless steel shaft
• Versatile shaft sealingStuffing box
• External or internal sealing liquid• Split stuffing box gland and lantern ring in ZPP with
withdrawal grooves for easy serviceMechanical seal
• Different mechanical seals available• Seals fit into the same chamber in ZPP as packings
providing easier change to another type of sealing
• Bearing unitZPP
• Long lifetime with high thrust spherical roller bearings, identical on both sides
• Grease or oil lubrication• Effective bearing protection by non-contact wear-free
labyrinth seals and deflector• No adjustments needed making assembly quicker
Z22• Long lifetime with high thrust angular contact ball bearing
for axial load and deep ball bearing for radial load• Grease lubrication as standard
• Flexible installation• Fully flexible drive end, including double drive• Horizontal or vertical installation gives compact
installation• Some Z22 sizes are available in angled execution
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3
4
5
6
7
Performance range
ZPP Double Suction Axially Split Single Stage Centrifugal Pump
50 Hz 60 Hz
250 to 900 mm Pump sizes 10 to 35 in
up to 30,000 m3/h Capacities up to 132,000 USgpm
up to 160 m Heads up to 525 ft
up to 25 bar Pressures up to 362 psi
120°C* Temperatures 250°F*
Hydrocarbon processing
industry
Oil and gas Power generation
Pulp and paper
General industry
Water and wastewater
Chemical processing
industry
Operating data
Materials
160
Head H (m)
100
10,000400
40
20
1,000
Head H (ft)
Capacity Q ( )U gpmS
2,000
50
100
75
200
100,000
300
5,000 10,000 20,000 50,000
60
15
150
40,000
Capacity Q (m /h)3
3,000
Main part Duplex stainless steel design Cast iron design
Volute casing SS ASTM A890 Gr.3A CI ASTM A48 CL 35B
Impeller SS ASTM A890 Gr.3A SS ASTM A 890 Gr.3A
Shaft SS2324 SS2324
Casing wear ring SS ASTM A890 Gr.3A SS ASTM A890 Gr.3A
Shaft sleeve SS2324 SS2324
* depending on material and size
Performance range
Z22 Double Suction Axially Split Single Stage Centrifugal Pump
50 Hz 60 Hz
200 to 1,000 mm Pump sizes 8 to 40 in
up to 17,000 m3/h Capacities up to 75,000 USgpm
up to 220 m Heads up to 720 ft
up to 25 bar Pressures up to 362 psi
140°C* Temperatures 280°F*
Operating data
Materials
Main part Duplex stainless steel design Cast iron design
Volute casing SS ASTM A890 Gr.3A CI ASTM A48 CL 35B
Impeller SS ASTM A890 Gr.3A SS ASTM A 890 Gr.3A
Shaft SS2324 SS2324
Casing wear ring SS ASTM A890 Gr.3A SS ASTM A890 Gr.3A
Shaft sleeve SS2324 SS2324
* depending on material and size
20,000
Head H (ft)Head H (m)
Capacity Q ( )U gpmS
2,000
1,000500
50
100
200
200
200
100
50
20
10
800
5,000
5,000
10,000
10,000
20,000 50,000
150
Capacity Q (m /h)3
Series Z22 is available in a wide range of material. Please contact your Sulzer representative for more information.
Hydrocarbon processing
industry
Oil and gas Power generation
Pulp and paper
General industry
Water and wastewater
Chemical processing
industry
E00502 en (7) 3.2015, Copyright © SULZER Ltd. 2015This brochure is a general presentation. It does not provide any warranty or guarantee of any kind. Please, contact us for a description of the warranties and guarantees offered with our products. Directions for use and safety will be given separately. All information herein is subject to change without notice.
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